Hartford weather in May 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Hartford in May. Check more long-term weather averages for Hartford in May before you book your next holiday to Connecticut in 2025/2026.

  • 21°C maximum daytime temperature in May in Hartford21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in May in Hartford12
    12 days with some rainfall
  • 8°C minimum night-time temperature in May in Hartford8
    8°C min night temperature
  • 15 hours of daylight per day in May in Hartford15
    15 hours of daylight per day
  • No heat & humidity in May in Hartford0
    No heat & humidity
  • 101 mm monthly rainfall in May in Hartford101
    101 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Hartford7
    7 (High) UV index

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The May weather guide for Connecticut (Hartford) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Hartford in May?

Daytime temperatures usually reach 21°C in Hartford in May, falling to 8°C at night.

How sunny is it in Hartford in May?

There are normally 8 hours of bright sunshine each day in Hartford in May - that's 58% of daylight hours.

Does it rain in Hartford in May?

There are usually 12 days with some rain in Hartford in May and the average monthly rainfall is 101mm.

Hartford May sunrise & sunset times

Browse the sunrise and sunset times for Hartford in May 2025. Select a month to view Hartford sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:47 18:50
Friday, 16th May 2025 04:30 19:05
Saturday, 31st May 2025 04:19 19:19

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